We have to be very careful as to who cooks, what kind of food we are eating, because it does affect our consciousness.
What is the value of a prolonged life which is wasted, inexperienced by years in this world? Better a moment of full consciousness, because that gives one a start in searching after his supreme interest.
As long as our consciousness is materialistic, there is no room for joy. However on the spiritual platform three things automatically happen: eternity, knowledge and bliss.
If you become conscious of Me, (Lord Krishna) you will pass over all the obstacles of conditioned life by My grace. If, however, you do not work in such consciousness, but act through false ego, not listening to Me, you will be lost.
Our humble service attitude in our life is what determines what effect chanting will have on our consciousness. Otherwise we can be chanting for millions and millions of births before we actually achieve the goal.